linux-kernel - Re: [PATCH v2 2/6] host1x: hdmi: Detect whether display is connected with HDMI or DVI

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Date:	Wed, 4 Sep 2013 23:59:03 +0200
From:	Thierry Reding <thierry.reding@...il.com>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	Mikko Perttunen <mperttunen@...dia.com>, tbergstrom@...dia.com,
	dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/6] host1x: hdmi: Detect whether display is connected
 with HDMI or DVI

On Wed, Sep 04, 2013 at 12:40:58PM -0600, Stephen Warren wrote:
> On 08/28/2013 09:48 AM, Mikko Perttunen wrote:
> > Use EDID data to determine whether the display supports HDMI or just DVI.
> > This used to be hardcoded to be HDMI, which broke support for DVI displays
> > that couldn't understand the interspersed audio/other data.
> > 
> > If the EDID data isn't available, default to DVI, which should be a safer
> > choice.
> 
> This seems like a bug-fix that might even be worth CC: stable?

Possibly. The patch reaches deeply into some DRM structures, which I'd
like to avoid. I'll have another look to see if it can be done in a
slightly different way.

Thierry

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